Knife



-P'. (MNZHORN.` Y f KNIFE.' APPLlcATroumin umfzz. ma.'

Patented Api?, 19,1921.v

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PHLIE GANZHORN, OIE' CHICAGO, ILLINOIS.

KNEE.

herstel.

Specification of Letters Patent. Pai-,Qnggd Apr. 19 ggo Application inedtray ae, 191s. seran no. 236,069. j

cient in operation. A further object is to provide a knife comprising asimple form of holder wherein novel blade securing and ad- 'ustino meansare nrovided. With the fore-V going and other objects in view theinvention. consists in the combinationand arrangement of parts to behereinafter fully described, pointed out in the appended claim andillustrated in the accompanying drawing which forms a part of thisspecification and in which Figure 1 is a fragmentary plan view of myimproved knife.

Fig. 2 is a cross section taken on line 2 2 of Fig. 1.

Fig. 3 is a plan view of one type of blade employed.

Fig. 4 is a plan view of a slightly modified form of knife from thatillustrated in Fig. 1.

Fig. 5 is a cross section taken on line 5 5 of Fig. 4.

Fig. 6 is a plan view of the blade employed in Fig. 4.

Fig. 7 is a cross section taken on line '7*7 of Fig. 9.

Fig. 8 is a perspective view of the blade holding and adjusting meansshown in Figs. 1 and 2.

Fig. 9 is a fragmentary plan view of a slightly modied form of knife.

Like reference characters denote corresponding parts throughout theseveral views.

My improved knife comprises a holder having a circular hub 1 formed withthe central perforation 2 and radiating from said extending beyond theperforation and carrying a nut 8 formed with a stem 9 adapted forinsertion in a perforation formed in the blade 5 whereby said bladeisreleasably retained in operative position in the said groove 4. It isevident that the blade may be secured more or less rmly in the saidgroove by means of the said screw 6 which is adjustable through themedium of a wrench applied to its head. Y

1n Figs. 7 and 9 the perforation 6, inarm 3, opens into a groove lOthatreceives the collar 1l of screw 7 said collar extending beyond the saidgroove 10 for engagement with the elongated perforation 12 formed inthe.

blade 5. The screw 7 being formed with the groove 13 may be adjustedrelatively to the f arm 3 to cause adjustment ofthe blade 5 and to bindthe same rmly in the said groeve 4. 'I Y In Figs. 4 and 5 each arm 3 isformed with a perforation 14 that extends transversely ,o f the groove 4to receive a screw 15 which engages with a perforated portion in theblade 5 whereby said blade is releasably locked in position in thegroove 4.

`What is claimed is:-

In a knife of the character described, the combination with asubstantially.rectangular supporting arm having a longitudinal slot inone side face and a transversely disposed centrally located perforationabove said slot at right angles thereto; of a reversible blade withlongitudinal cutting edges beveled in reverse directions, either edgebeing adapted to be positioned in said slot, said blade having a centralperforation therein, a bolt eX- tending through the perforation of saidsup-Y porting arm, one end of said bolt projecting out over said bladeabove the perforation therein, a blade retaining nut threaded on saidprojecting-end of the bolt, and a peri-pheral radial stem on said nut tobe received in the perforation of said blade, the inner end of said slotserving to limit the inward travel of the blade. Y

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of twoV subscribing witnesses.

PHIL eANzHonN.

Witnesses WM. HARVEY EICHELMAN H. J. SANDERS.

